Recent studies point out that the surface winds and waves have significant trends and variability in the global ocean. This is subject not only to the climatic modes but also to global warming. The variability studies of met-ocean parameters in the marginal/enclosed seas are very limited. This may be due to the limitations in the measurements or coarse resolutions in the applied climate models. In this context, it is important to evaluate the variability of waves and winds in the enclosed/marginal seas based on available measurements and fine resolution numerical modelling. This special issue focuses on the research pertaining to the wind-wave variability in enclosed/marginal seas or strategic open coasts worldwide.